Source: http://www.abarim-publications.com/Meaning/Cozeba.html

🔼The name Cozeba in the Bible

The name Cozeba occurs only once in the Bible and scholars suggest that it's the same place as Achzib and Chezib (which are closely related names). Cozeba is mentioned probably as the name of a town, belonging to the descendants of Shelah of Judah, who was born in Chezib (1 Chronicles 4:22, see Genesis 38:5).